Filtration apparatus for municipal or commercial uses.



g No. 714,709. Patented nec. 2, |902. LV P. KEANE. FILTRATION APPARATUS FOR MUNICIPAL 0R COMMERCIAL USES.

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J. P. KEANE. l l FlLTRATlUN APPARATUS FR MUNICIPAL 0R, COMMERCIAL USES.

(Application me@ July 2, 1902;) (un Model.) 3 sheets-sheer a.

Ill Il lll which water passes from a laterally-adjacent filter of each unit discharging into a servicemuddy and impure water, its object being' to JAMES I?. KEANE,.OF CINCINNATI,

OHIO, ASSIGNOR OF ONE-HALF TO EDWARD N.V ROTH, OF CINCINNATI, OHIO.

FILTRATION APPARATUS FR'MUNICIPAL 0R COMMERCIAL USES.

SPECIFICATION forming part of Letters Patent No. 714,709, dated December 2, 1902.

Application filed July 28, 1902.

Be it known that I, JAMES P. KEANE, a citizen of the United States, residingat Cincinnati, in the county of Hamilton and Stateof Ohio, have invented new and useful Improve# ments in Filtration Apparatus for Municipal or Commercial Uses, of which the following is a specification.

My invention relates to the filtration `of provide a system 0f apparatus for municipal or commercial uses,`the primary feature' of which is a filtering tank or chamber, through trough. Two of such tanks or chambers,with a distributing-trough between, constitute in the system of apparatus herein described a filtering unit, `and the entire apparatus embodies a series of such units arranged in laterally-adjacent relations in groups, the outside conduit common to the nearest filter of the next adjacent unit.

The filters are peculiarly-constructed chambers built of sheet metal wholly above ground, preferably in the form of elongated truncated wedges resting upon their broader bases and converging upwardly and arranged in parallel relations, the space between the two filters of a unit being closed at the ends and forming, with the adjacent sides of the filters, a receiving and distributing trough for the filters of the unit. Both sides of each filter` ing-chamber are perforated to permit the water received from the intervening trough to pass outward through the filtering material of each chamber and through the outer sides, where it flows downward into the conduit for distributing to an outer reservoir for further distribution to the service-mains.

Each filter is divided by cross-partitions into independent chambers of convenient length, and the general top of the lter is closed by caps `orcovers corresponding with the several chambers. i At the outer or discharge'side of each filter is a narrow space inclosed by an extension of the cross-partitions and an imperforate outer wall, forming an auxiliary chamber, into which the clear water passes from the filters and thence outward into a conduit below through exit-cocks.

Serial No. 117,309. (No modell) side in multiple relation to common inlet and i discharge conduits, and thus concentrate in a relatively small space apparatus having very considerable filtering capacity of such character as to be continuously operative as a whole,while the cleansing of individual units may be constantly carried on at the same` time.

Further details will be presented in the course of the subjoined description in con-` nection with the figured illustrations.

My invention is illustrated in the accompanying drawings, in which- Figure l is an end elevation of two of the ltering units arranged for operation; Fig. 2, a partial plan view of one of the filtering units; Fig. 3, ay plan sectioniof one of the filters, taken about midway and showin g the general construction features. Fig. 4 is a perspective view of one of the sectional screens'detached; Fig. 5, a cross-sectional elevation of one of the filters; Fig. 6, a diagrammatic plan of two filtering units, showing the arrangement of pipe connections and explanatory of the general working of the apparatus.

Referring now to the drawings, A and A2 designate so-called units of my filtering apparatus, each embracing two main filters a a2, preferably of truncated Wedge form, placed side by side in parallel relations, with a space b between, utilized as a receivingtrough for water to be treated.` The filters a.' a2 are tanks of sheet metal, closed at bottom, sides, ends, and top, except minute perforations through the sides and covered openings at the top for access.` The space b is closed at the ends to form, with the adjacent sides of the filters c a2 and the common foundation structure w, a trough for the admission of water to be treated. The filter-tanks ac are identical in structure and arepreferably constructed as follows: Perforated side plates as d3 are bolted or riveted to and between the imperforate cross-partitions c and end plates c'. In like manner at the discharge side imperforate outer side plates a4 are bolted to extensions ot' said side partitions and end plates and closed in at top and bottom to form aux-A iliary outer chambers between the partitions. The general filter is thus divided into compartments c2, each having at one side its auxiliary chambers. The latter are provided at the bottom with one or more discharge-apertures,provided with governing-valvesy, and are also provided with apertures at or near the top, provided with governing-valves z, the latter having pipe connections, hereinafter described.

The top of the general filter A A2 is closed by a number of covers d, one for each compartment, extending also over the corresponding auxiliary compartments. The tank-compartments are filled with any suitable material-such as sand, dac-between the convex sides of sectional screens d@ placed side by side to form a minutely-perforated lining inside the main walls a3, Whose perforations are larger. The convex spaces at the outer sides of' the screens d are filled with coarser filtering material, such as fine gravel or thelike.

The units of the system of apparatus are placed side by side in parallel relations, and the discharge-streams flow into a conduit e between and common to both, whence it is discharged ultimately into a clear-water reservoir for use.

vThe two filters a/ a2 of a filtering unit are tied together by tie-rods f to resist the outward pressure of water contained in the intervening trough b.

Referring now to the diagrammatic plan view, Fig. 6, the series of upper valves z are connected by a common branch pipe a at each sideof each filter Al A2 to a pump-main z2, leading to a pump P, drawing from a clearwater reservoir. The clear-water conduits e connect by pipes e', branched into mains e2 e3, all suitably governedby valves and leading'to a reservoir R', used for cleansing purposes, as Will be hereinafter explained, and R2 for final distribution and use.

The troughs b have valved outlets b', leading to a sewer. These troughs are normally supplied from a reservoir R with water to be filtered.

The mode of operation is as follows: Water to be filtered is supplied vfrom a reservoir R or other source of supply to the troughs b, which are kept constantly full. Thence it passes outward through the adjacent tanks a. a2, passing through the perforated sides a3, screens d, and the contained filtering material into and through the auxiliary chambers within the shields a4 and is discharged through the cocks y into conduits e, whence it passes through outlets e/ and mains e8 into the final reservoir R2. f In this passage the mud and impurities are filtered out andv retained by the ltering material of the tanks. When cleansing is necessary, the supply is shut off, the tanks drained, the series of exit-cocks y are all closed, (a bridge g, Fig. 1,) affording convenient access, and the pump P started in operation. One by one the compartments c2 are subjected to. the passage of water through the pipes z2 e and the proper cock c into and through the compartment-section of the filter in reverse, the water passing out ward through the normal receiving side a3 into the trough b, whose exit is opened into the sewer. It may now be explained that the object of this dividing of the general filtering-tank into sections or separate compartments is to concentrate a strong water-pressure upon and through a limited area-of the lter to agitate the filtering material, and thus facilitatethe thorough cleansing. The compartments are thus successively treated until a unit is entirely cleansed. As the system when constructed for municipalities will preferably contain a number of units, one may be thus temporarily taken out of service without interfering with the use of all the rest, so that in a system containing a number of such units cleansing can gov on continuously while the apparatus as a whole is performing its proper functions.

When the cleansing of a unit is completed and the connections are restored to normal working position, the first'water that passes is apt to be a little milky and is passed through the mains e2 into reservoir R as a source of pump-supply for cleansing purposes; but as soon as the water runs perfectly clear the discharge is turned through main c2 into reservoir R2.

I claim as my invention and desire to secure by Letters Patent of the United States- 1. A filtering-tank with perforated sides and containing suitable filtering material and adapted to lter by the passage of water laterally entirely through the same from side to side, imperforate cross partitions dividing the tank into separate compartments, and an auxiliary side chamber for each compartment, substantially as set forth.

2. A filtering-tank with perforated sides and containing suitable filtering material and adapted to filter by the passage of water laterally entirely through the same from side to side, an outer auxiliary chamber formed by imperforate Walls attached to the delivery side of the tank, and imperforate partitions extending across the tank and auxiliary chamber and dividing each into separate chambers, as and for the purpose set forth.

3. A filtering-tank with perforated sides and containing suitable filtering material said tank having imperforate cross-partitions dividing it into separate compartments, and an auxiliary side chamber for each compartment, in combination with a trough at the opposite side of the tank adapted to hold and deliver the Water simultaneously over and through IOO IIO

the entire perforated area of the receiving side, substantially as set forth.

4. `A iiltering tank of upright approximately Wedge form, With perforated sides and containing suitable ltering material and adapted to filter by the passage of Water laterally entirely through the saine from side to side, and divided by cross-partitions into adjacent compartments, and an auxiliary cham-V ber at the side, said partitions being extended through the auxiliary chamber, substantially as set forth. 4

5. A filtering tank of upright approximately wedge form, with perforated sides and containing suitable filtering material and adapted to filter by the passage of Water laterally entirely through the same from side to side, anddivided by cross-partitions into adjacent compartments, and an auxiliary chamber at the side, said partitions being extended through the auxiliary chambers, in combina- V tion with movable top covers corresponding with the compartments, to afford access to the main or auxiliary compartments, substantially as set forth.

6. The combination of a pair of filter-tanks having'upWardly-converging sides said tanks separated from each other to form an intermediate downwardly-converging trough for containing unfiltered Water, adapted to percolate through the adjacent sides of the tanks, and side chambers at the outer sides of the tanks adapted to receive filtered Water.

'7, Incombination With a filtering-tank, divided into independent compartments and having the divided auxiliary chamber described, discharge-inlets provided With governing-valves arranged at the bottom of the auxiliary chambers, and similar valved inlets l delivery-reservoir, and also to ailushingwater basin, with controlling-valves to turn the Water into either as desired.

9. The combination of a tank having crosspartitions dividing it into separate compartments, auxiliary chambers at the side of the tank, and an inner perforated lining for the tank, substantially as described.

l0. The combination, With a filtering-tank of the character indicated, an inner perforated lining, consisting of detachable concave perforated plates adapted to rest side by side, substantially as set forth.

In testimony whereof I have hereunto set my hand in presence of two subscribing Witnesses.

JAMES P. KEANE. Witnesses:

OHAs. HERBERT JONES, Jos. R. GARDNER. 

